Blog · October 14, 2026 · Illinois
Washington Plat Map, Illinois: plats and lots
Lots in Washington trace back to recorded plats filed with the county.
Main page: Tazewell County, IL GIS & Parcel Viewer (official map link, county facts and neighboring maps).
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When a listing near Deer Creek mentions a lot number, the Washington plat map is where those numbers come from. In this Washington guide: where to request a copy, plat versus tax map, and the details that matter to buyers.
Getting started with the Washington plat map
For land around Morton, look for the plat book reference on the parcel record; use it to request a copy.
Opening the official parcel viewer
Go first to the Tazewell County ArcGIS parcel map; it maps every tax parcel from Marquette Heights to Deer Creek. If the land is near Marquette Heights, type a street address, an owner's name or a parcel number, and the viewer zooms to the match. For property near Deer Creek, the parcel card normally shows the owner of record, acreage on the tax roll, a parcel ID and often a sale date.
Using it on a phone
The parcel map usually runs in a mobile browser, useful out on a road near Deer Creek, though signal can drop in rural spots. A printout of the tract near Deer Creek keeps working without signal.
Amended plats
Lots near North Pekin can be combined or reconfigured by a replat, so check for later filings; street vacations near Morton show up in the records too.
When there's no plat
Rural land near North Pekin that was never subdivided may have no plat at all; look for a recorded survey for land near Morton.
Where Washington fits in
Washington is part of Tazewell County, Illinois, so its parcels are on the county's map. For a parcel near East Peoria, the municipality handles things like zoning, permits and utilities for lots inside the boundary, and the county still keeps the parcel and deed records. Lots just outside the town limits near Marquette Heights often falls under county rules, not municipal ones.
Recorded documents worth pulling
The map is an index, not the title: deeds, subdivision plats and easements for land near Morton are kept by the county Recorder of Deeds (in many counties the County Clerk and Recorder). For a tract near Morton, have ready the document number shown in the record panel to skip a name search.
Tazewell County in a few facts
Pekin serves as the county seat, which is where the courthouse records live. Other places on the map include East Peoria, Morton, Deer Creek, and Creve Coeur, each with its own cluster of lots. Around 129,541 people live in Tazewell County (Census Bureau estimate, 2023) spread over roughly 646 square miles. Tazewell County was formed in 1827, and some chains of title near Deer Creek are long.
Recorded plat or GIS layer
The Tazewell County ArcGIS parcel map draws parcels for taxes, while the recorded plat is the legal document.
Sections, lots and bearings
Illinois follows the Public Land Survey System, so deeds around Creve Coeur reference sections and townships. Each section is nominally a mile square, about 640 acres, with 36 sections to a township, though corrections make some sections near Creve Coeur odd-sized. Copy the legal description from the record for the parcel near Morton when you talk to a surveyor.
Which office to call
Recorded documents for a parcel near Creve Coeur sit in the index kept by the county Recorder of Deeds (in many counties the County Clerk and Recorder), sometimes only in person. Zoning, permits and septic questions near Morton need the planning or permitting office, depending on whether the land is inside town limits.
Details on the Washington plat map
For a home near Morton, the sheet usually includes lot and block numbers, dimensions and bearings, street rights-of-way and easements.
Ordering the Washington plat map
For property near East Peoria, some counties put plat images online, while others require a visit or a request; copy fees are usually small.
Next door to Tazewell County
Tazewell County borders Fulton County, Logan County, McLean County, Mason County, and Peoria County; every one of them runs a separate parcel map. Acreage along the edge near Morton can be split in two county records, so check the neighboring map as well. For property near North Pekin, our state page lists every bordering county map for Illinois.
Questions about the Washington plat map
What do the dashed lines on a plat mean for land near East Peoria?
Good question; building on an easement near East Peoria is generally restricted; ask planning staff if unsure.
How do I split a lot in Washington?
Short answer: lot splits in Washington go through the planning office; ask staff about the process.
What is a lot and block description for land near North Pekin?
Good question; it points to a spot on the plat for that subdivision near North Pekin, so pull that plat for dimensions.
Is a plat map a survey in Washington?
In and around North Pekin, a recorded plat is based on a survey, but the GIS map is not; a surveyor ties it to the ground.
Where do I ask about an assessment near Morton?
The Supervisor of Assessments, working with township assessors handles values and the tax roll, and the county Recorder of Deeds (in many counties the County Clerk and Recorder) keeps deeds; planning offices cover zoning near North Pekin
Open the official Tazewell County, IL parcel map See it in the Platbookmapper directory
Not a survey. County GIS and tax parcel maps are assessment and planning layers. They are not a substitute for a recorded plat, deed, or licensed survey, especially for fences, setbacks, or boundary disputes.